diff --git a/src/client/src/tscParseOpenTSDB.c b/src/client/src/tscParseOpenTSDB.c
index 6d0a741bdec5eed3313136bb028cb928de43e2d6..66357dbac543937a0a284a6153a28de775cef0d4 100644
--- a/src/client/src/tscParseOpenTSDB.c
+++ b/src/client/src/tscParseOpenTSDB.c
@@ -616,7 +616,7 @@ int32_t parseTagsFromJSON(cJSON *root, TAOS_SML_KV **pKVs, int *num_kvs, char **
 int32_t tscParseJSONPayload(cJSON *root, TAOS_SML_DATA_POINT* pSml, SSmlLinesInfo* info) {
   int32_t ret = TSDB_CODE_SUCCESS;
 
-  if (cJSON_IsObject(root)) {
+  if (!cJSON_IsObject(root)) {
     tscError("OTD:0x%"PRIx64" data point needs to be JSON object", info->id);
     return TSDB_CODE_TSC_INVALID_JSON;
   }